199400441 has 2 divisors, whose sum is σ = 199400442. Its totient is φ = 199400440.

The previous prime is 199400431. The next prime is 199400473. The reversal of 199400441 is 144004991.

It is an a-pointer prime, because the next prime (199400473) can be obtained adding 199400441 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112444816 + 86955625 = 10604^2 + 9325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199400441 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 199400398 and 199400407.

It is not a weakly prime, because it can be changed into another prime (199400431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99700220 + 99700221.

It is an arithmetic number, because the mean of its divisors is an integer number (99700221).

Almost surely, 2^199400441 is an apocalyptic number.

It is an amenable number.

199400441 is a deficient number, since it is larger than the sum of its proper divisors (1).

199400441 is an equidigital number, since it uses as much as digits as its factorization.

199400441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 199400441 is about 14120.9221016193. The cubic root of 199400441 is about 584.2185890069.

The spelling of 199400441 in words is "one hundred ninety-nine million, four hundred thousand, four hundred forty-one".